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[microblaze-uclinux] EXT2 filesystem on RAMDISK
Hi:
I'm trying to use EXT2 on RAMDISK as root filesystem. I'm using uClinux,
running on Xilinx Spartan board. I've created image, downloaded it and
try to boot:
## Loading Ramdisk Image at 23400000 ...
Image Name: 'AKA Ramdisk'
Image Type: Microblaze Linux RAMDisk Image (uncompressed)
Data Size: 4194304 Bytes = 4 MB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
No Linux M68K
Error comes from u-boot/lib_microblaze/microblaze_linux.c file and I've
fixed that - see my change below:
====
//depot/LM125/uClinux/petalinux-v0.10-rc1/software/petalinux-dist/u-boot
/lib_microblaze/microblaze_linux.c#1 -
/home/leonid/LM125/uClinux/petalinux-v0.10-rc1/software/petalinux-dist/u
-boot/lib_microblaze/microblaze_linux.c ====
@@ -113,13 +113,13 @@
}
SHOW_BOOT_PROGRESS (11);
if ((hdr->ih_os != IH_OS_LINUX) ||
- (hdr->ih_arch != IH_CPU_M68K) ||
+ (hdr->ih_arch != IH_CPU_MICROBLAZE) ||
(hdr->ih_type != IH_TYPE_RAMDISK)) {
- printf ("No Linux M68K Ramdisk Image\n");
+ printf ("No Linux Microblaze Ramdisk Image\n");
SHOW_BOOT_PROGRESS (-13);
do_reset (cmdtp, flag, argc, argv);
}
Now image loads fine, but mounting fails:
Linux version 2.4.32-uc0 (root@mylinux) (gcc version 3.4.1 ( Xilinx EDK
8.1.01 Build EDK_I.19.4 080506 )) #42 Thu Feb 1 18:15:43 PST 2007
On node 0 totalpages: 8192
zone(0): 8192 pages.
zone(1): 0 pages.
zone(2): 0 pages.
CPU: MICROBLAZE
Kernel command line: ramdisk_size=8192 root=/dev/ram rw
macaddr=00:01:02:03:cf:71
ip=192.168.0.207:192.168.0.141:192.168.0.1:255.255.255.0:L
M125:eth0:off panic=1 console=ttyS0,115200
Console: xmbserial on UARTLite
Calibrating delay loop... 2.37 BogoMIPS
Memory: 32MB = 32MB total
Memory: 29828KB available (1231K code, 1348K data, 56K init)
Dentry cache hash table entries: 4096 (order: 3, 32768 bytes)
Inode cache hash table entries: 2048 (order: 2, 16384 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 1024 (order: 0, 4096 bytes)
Page-cache hash table entries: 8192 (order: 3, 32768 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
Microblaze UARTlite serial driver version 1.00
ttyS0 at 0x40600000 (irq = 2) is a Microblaze UARTlite
ttyS1 at 0xffffe000 (irq = 3) is a Microblaze UARTlite
Starting kswapd
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
eth0: using fifo mode.
eth0: Xilinx EMAC #0 at 0x40E00000 mapped to 0x40E00000, irq=1
eth0: id 2.0h; block id 7, type 1
physmap_auto flash device: 400000 at 21000000
physmap_auto probing buswidth 1
Amd/Fujitsu Extended Query Table v1.0 at 0x0040
MFR 0x20 DevCod 0x2257 DevTyp X16 intr 1 bootloc 2 unlk AAA 555
number of CFI chips: 1 devsize 0x00400000
Chip 0 reg 0 offset 0x00000000 size 0x2000 num 8
Chip 0 reg 1 offset 0x00010000 size 0x10000 num 63
cfi_cmdset_0002: Disabling fast programming due to code brokenness.
physmap_auto: no partition info available, registering whole flash at
once
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 2048 bind 4096)
eth0: Promiscuous mode disabled.
IP-Config: Complete:
device=eth0, addr=192.168.0.207, mask=255.255.255.0,
gw=192.168.0.1,
host=LM125, domain=, nis-domain=(none),
bootserver=192.168.0.141, rootserver=192.168.0.141, rootpath=
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
cramfs: wrong magic
FAT: bogus logical sector size 0
FAT: bogus logical sector size 0
Kernel panic: VFS: Unable to mount root fs on 01:00
<0>Rebooting in 1 seconds..
What's wrong with my uClinux configuration?
Thanks,
Leonid.
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